<template>
  <view class="index" :style="{overflow:'hidden',height:pageHeight}">
    <!-- 搜索 -->
    <search @search="disScroll" />
    <!-- 轮播图 -->
    <view class="slider">
      <swiper
        autoplay
        interval="2000"
        circular
        indicator-dots
        indicator-color="rgba(255,255,255,1)"
        indicator-active-color="rgba(255,255,255,.6)"
      >
        <swiper-item :key="item.goods_id" v-for="item in swiper">
          <navigator :url="'/packone/goods/index?id='+item.goods_id">
            <image :src="item.image_src" />
          </navigator>
        </swiper-item>
      </swiper>
    </view>
    <!-- 功能导航 -->
    <view class="navs">
      <navigator
      :open-type="item.open_type?item.open_type:'navigate'"
       :url="i===0?'/pages/category/index':'/packone/list/index?query='+item.name"
        v-for="(item, i) in navs" 
        :key="item.image_src">
        <image :src="item.image_src" />
      </navigator>
    </view>
    <!-- 栏目楼层 -->
    <view class="floors">
      <!-- 1 -->
      <view class="floor" v-for="item in floors" :key="item.floor_title.name">
        <!-- title -->
        <view class="ftitle">
          <image :src="item.floor_title.image_src" />
        </view>
        <!-- pics -->
        <view class="fitem">
            <!-- 遍历楼层下的商品 -->
          <navigator url
          v-for="prd in item.product_list"
          :key="prd.name"
          >
            <image :src="prd.image_src" />
          </navigator>
        </view>
      </view>


    </view>
    <!-- 底部提示 -->
    <view class="end">
      <text>我是有底线的！</text>
    </view>
    <!-- 回到顶部 -->
    <view @click="goTop" class="goTop icon-top"  v-if="scrollTop"></view>
  </view>
</template>

<script>
// 导入组件
import search from "@/components/search/index";
export default {
  data() {
    return {
      pageHeight: "auto",
      // 轮播图
      swiper:[],
      // 导航栏
      navs:[],
      // 栏目楼层
      floors:[],
      // 页面滚动高度
      scrollTop:0
    };
  },
  // 注册组件
  components: {
    search
  },
  // 计算属性
  computed: {
    isShowTop() {
      return this.scrollTop>this.wh 
    }
  },
  onLoad() {
    // 获取轮播图
   this.getSwiper()
   // 获取导航
   this.getNavs() 
   // 获取楼层 
   this.getFloors()
   //  js方式刷新页面 
   // 开启下拉刷新
   // nui.startPullDwnRefresh()
   //获取屏幕数据=》回顶按钮显示条件
   this.wh = uni.getSystemInfoSync().windowHeight/2  
  },
  // onReady(){
  //   // 关闭下拉刷新(需要手动)
  //   uni.wx.stopPullDownRefresh()
  // },
  // 页面滚动触发
  onPageScroll(e){
     console.log(e);
     this.scrollTop=e.scrollTop
  },
  // 下拉刷新 
  onPullDownRefresh () {
  // console.log("刷新了");
  // 执行多个异步任务并发运行 => 等到所有异步任务完成=>获取所有结果
  Promise.all([this.getSwiper(), this.getNavs(),this.getFloors()]).then((res)=>{
    console.log(res);
  })

  },
  methods: {
    // 回到顶部
    goTop(){
      uni.pageScrollTo({
        scrollTop: 0,
        // duration: 300
      });
    },
    // 搜索时禁止页面滚动
    disScroll(e) {
      this.pageHeight = e;
    },
    // 获取轮播图数据
   async getSwiper(){
    const {msg ,data} = await this.request({
         url:'/home/swiperdata',
        })
      if(msg.status===200){
        console.log("swiper:", data);
       this.swiper=data
       return data
      }
    },
    // 获取导航栏
    async getNavs(){
      const  {msg , data}= await this.request({
        url:'/home/catitems',
      })
      console.log( "获取导航栏::",msg , data);
      if(msg.status===200){  
       this.navs=data
       return data
      }
    },
    // 获取楼层
    async getFloors(){
      const  {msg , data}= await this.request({
        url:'/home/floordata',
      })
      console.log(msg , data);
      if(msg.status===200){
        console.log("flools:",msg , data);  
       this.floors=data
       return 404
      }
    }
  }
};
</script>

<style lang="scss">
.index {
  // 轮播
  .slider {
    swiper,
    image {
      width: 750rpx;
      height: 340rpx;
    }
  }
  // 功能导航
  .navs {
    display: flex;
    padding: 30rpx;
    background: #fff;
    justify-content: space-between;
    navigator {
      width: 128rpx;
      height: 140rpx;
    }
  }

  // 栏目楼层
  .floor {
    .ftitle {
      padding-top: 30rpx;
      background: #f4f4f4;
      image {
        width: 750rpx;
        height: 60rpx;
      }
    }
    // pics
    .fitem {
      padding: 20rpx 16rpx 10rpx;
      overflow: hidden;
      navigator {
        float: left;
        width: 193rpx;
        height: 188rpx;
        margin-left: 10rpx;
        margin-bottom: 10rpx;
      }
      navigator:nth-child(1) {
        width: 232rpx;
        height: 386rpx;
        margin-left: 0;
      }
      navigator:nth-child(2),
      navigator:nth-child(5) {
        width: 273rpx;
        height: 188rpx;
      }
    }
    &:first-child {
      .fitem {
        navigator {
          width: 233rpx;
        }
      }
    }
  }
  .end {
    text-align: center;
    font-size: 24rpx;
    color: #999;
  }
  .goTop {
    position: fixed;
    bottom: 30rpx;
    /* #ifdef H5 */
    bottom: 65px;
    /* #endif */
    right: 30rpx;

    display: flex;
    justify-content: center;
    align-items: center;
    width: 100rpx;
    height: 100rpx;
    font-size: 48rpx;
    color: #666;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.8);
  }
}
</style>
